I'm going to chime in for no particular reason except that it is raining here and I am looking for something to do. Here is my first assessment of the gamut of knowledge and replies: There are scientific assessments, engineering assessments, speculation, and wild speculation. Any information I generally provide is based on wild speculation which I think is the most fun; but more useful knowledge would be from those who have actually used "Teflon" lined cables, which brand of cables they have used, and are they satisfied with the improvements and value of the product?